Source for hydraulic cooler fan

/ Source for hydraulic cooler fan #1  

Frank Sorbello

Gold Member
Joined
Jul 12, 2011
Messages
362
Tractor
Power Trac PT-422
I need to replace my hydraulic cooler fan for my pt-422. Anyone know a good source for replacement?

thanks,
Frank
 
/ Source for hydraulic cooler fan #6  
/ Source for hydraulic cooler fan
  • Thread Starter
#7  
Purchased two 12" fans off ebay for $34 and free shipping. Look just like the original, except two of the four mounting holes don't match up.
 
/ Source for hydraulic cooler fan
  • Thread Starter
#8  
Fan is not coming on after running hydraulics for a while. There is a oil cooler thermal relay in the manual. How do you check to see if that is working properly? Is that a common part or something I need to go through PT to get?

Thanks
 
/ Source for hydraulic cooler fan #9  
First, make sure the fan works with 12V across it.
If fan works, then,
Suspect the fuse for the fan.
If fuse good, then,
Suspect the thermal relay.
Put a meter on it. It should be open when cold.
Run up the tractor for 20-30 minutes and put a meter on it again. If its still open, its probably bad.

Mine went bad about 5 years into ownership. I just bypassed it and hook the fan to 12V directly each time I run the unit. Someday I'll repair it, maybe.
 
/ Source for hydraulic cooler fan #10  
Fan is not coming on after running hydraulics for a while. There is a oil cooler thermal relay in the manual. How do you check to see if that is working properly? Is that a common part or something I need to go through PT to get?

Thanks

Put a hair dryer or heat gun on the thermal switch.
 
/ Source for hydraulic cooler fan #11  
Mine is bad right now and I just bypassed it until I can look at it. A few years ago when it was "bad", it was just corroded contacts and worked fine when I cleaned it up.

Ken
 
/ Source for hydraulic cooler fan #12  
I'd bypass the thermal switch first, but other than that, I agree with MR.
They are a very standard part and they do wear out, especially if they are used without a relay to handle the switching load.

All the best,

Peter
 

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